|
|
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
LACTOSE TOLERANCE,5 SPEC(50G)*
Test CodeLAB6419
Quest Code
7675F
CPT Codes
PROF
Includes
Fasting specimen, 1/2-hour, 1-hour, 2-hour, and 3-hour specimens
Preferred Specimen
1 gray top tube for each timed specimen: fasting, 1/2,
1, 2, and 3 hours. Start time after lactose dose is
consumed. Submit all samples together with requisition.
Refrigerate.
1, 2, and 3 hours. Start time after lactose dose is
consumed. Submit all samples together with requisition.
Refrigerate.
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Improperly identified timed specimens
Methodology
Spectrophotometry (SP)
Setup Schedule
Monday through Friday
Report Available
3 Days
Reference Range
An increase of plasma glucose greater than 30 mg/dL is
considered normal. An increase of plasma glucose
less than 20 mg/dL over the fasting level, with
symptoms, is considered abnormal, and is evidence of
lactose deficiency.
considered normal. An increase of plasma glucose
less than 20 mg/dL over the fasting level, with
symptoms, is considered abnormal, and is evidence of
lactose deficiency.
Clinical Significance
Results may be used to evaluate deficiency of small bowel mucosal lactase, which may be associated with intolerance to lactose, manifested by diarrhea and other symptoms following ingestion of milk.
